Improve test cases

Author: andreise

src/collections-generic-equalitycomparers/Collections.Generic.EqualityComparers.Tests/CaseSources/NotEqualCaseSource_Equals.InnerNotEqualArraysOfInt32Nullable.cs

@@ -31,6 +31,10 @@ partial class NotEqualCaseSource_Equals
             new int?[] { 1, 2, 3 },
             new int?[] { 1, 2, 3, 4 }
         );
+        yield return (
+            new int?[] { null },
+            new int?[] { 0 }
+        );
         yield return (
             new int?[] { null },
             new int?[] { 1 }
@@ -49,19 +53,19 @@ partial class NotEqualCaseSource_Equals
         );
         yield return (
             new int?[] { 1, 2, 3, 4 },
-            new int?[] { 1, 2, 3, 3 }
+            new int?[] { 0, 2, 3, 4 }
         );
         yield return (
             new int?[] { 1, 2, 3, 4 },
-            new int?[] { 1, 2, 2, 4 }
+            new int?[] { 1, 1, 3, 4 }
         );
         yield return (
             new int?[] { 1, 2, 3, 4 },
-            new int?[] { 1, 1, 3, 4 }
+            new int?[] { 1, 2, 2, 4 }
         );
         yield return (
             new int?[] { 1, 2, 3, 4 },
-            new int?[] { 0, 2, 3, 4 }
+            new int?[] { 1, 2, 3, 3 }
         );
     }
 }

src/collections-generic-equalitycomparers/Collections.Generic.EqualityComparers.Tests/CaseSources/NotEqualCaseSource_Equals.InnerNotEqualArraysOfString.cs

@@ -31,6 +31,10 @@ partial class NotEqualCaseSource_Equals
             new[] { "1", "2", "3" },
             new[] { "1", "2", "3", "4" }
         );
+        yield return (
+            new[] { (string?)null },
+            new[] { "" }
+        );
         yield return (
             new[] { (string?)null },
             new[] { "1" }
@@ -49,19 +53,19 @@ partial class NotEqualCaseSource_Equals
         );
         yield return (
             new[] { "1", "2", "3", "4" },
-            new[] { "1", "2", "3", "3" }
+            new[] { "0", "2", "3", "4" }
         );
         yield return (
             new[] { "1", "2", "3", "4" },
-            new[] { "1", "2", "2", "4" }
+            new[] { "1", "1", "3", "4" }
         );
         yield return (
             new[] { "1", "2", "3", "4" },
-            new[] { "1", "1", "3", "4" }
+            new[] { "1", "2", "2", "4" }
         );
         yield return (
             new[] { "1", "2", "3", "4" },
-            new[] { "0", "2", "3", "4" }
+            new[] { "1", "2", "3", "3" }
         );
     }
 }